Function setTimeField calls strconv.ParseInt with bit size 0 when
parsing Unix time, which means it is equivalent to specifying 32 on
32-bit architectures. This causes the function to suffer from the year
2038 problem. To fix it and keep the behavior the same on both 32-bit
and 64-bit architectures, explicitly specify bit size 64.
Co-authored-by: thinkerou <thinkerou@gmail.com>
